ABB REG650 - Operation Principle

Name Values (Range) Unit Step Default Description
kLdRFw 0.50 - 0.90 Mult 0.01 0.75 Multiplication factor for inner resistive load
boundary, forward
kLdRRv 0.50 - 0.90 Mult 0.01 0.75 Multiplication factor for inner resistive load
boundary, reverse
IMinOpPE 5 - 30 %IB 1 10 Minimum operate current in % of IBase
Table 53: ZMRPSB Group settings (advanced)
Name Values (Range) Unit Step Default Description
tP1 0.000 - 60.000 s 0.001 0.045 Timer for detection of initial power swing
tP2 0.000 - 60.000 s 0.001 0.015 Timer for detection of subsequent power
swings
tW 0.000 - 60.000 s 0.001 0.250 Waiting timer for activation of tP2 timer
tH 0.000 - 60.000 s 0.001 0.500 Timer for holding power swing START
output
tR1 0.000 - 60.000 s 0.001 0.300 Timer giving delay to inhibit by the residual
current
tR2 0.000 - 60.000 s 0.001 2.000 Timer giving delay to inhibit at very slow
swing
Table 54: ZMRPSB Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Value
groups
7.1.6 Operation principle
Power swing detection (ZMRPSB ) function comprises an inner and an outer
quadrilateral measurement characteristic with load encroachment, as shown in
figure
62.
Its principle of operation is based on the measurement of the time it takes for a power
swing transient impedance to pass through the impedance area between the outer and
the inner characteristics. Power swings are identified by transition times longer than
a transition time set on corresponding timers. The impedance measuring principle is
the same as that used for the distance protection zones. The impedance and the
characteristic passing times are measured in all three phases separately.
1MRK 502 048-UEN A Section 7
Impedance protection
141
Technical manual